Child&#39;s sip cup



FIG. 1 is a top perspective view of a child's sip cup showing my new design;

FIG. 2 is a front elevational view thereof, the rear, left, and right side elevational views are identical substantially except for the threading around the top;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines showing the lid attached to the top of the child's sip cup in FIG. 1 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a child's sip cup, as shown and described. 